Nuclei of medulloblastoma cells revealed two types of structural changes: formations of cistern-limited nuclear sheets and intranuclear vacuolar profiles or myelin figures. The cistern-limited nuclear sheets were extremely elongated and were contained on either side by the perinuclear cisterns. They were usually composed of a central granular or beaded heterochromatin layer between less dense l...

The purpose of the study was to evaluate the usefulness of magnetic resonance (MR) in imaging of the cisternal and petroclival segments of the abducent nerve. Heavily T2-weighted submillimetric 3D sequence in axial plane, T1-weighted 3D, 1.5 mm slice thickness sequence in axial plane and TOF sequence were performed on 16 volunteers. Additionally the reformatted T2-weighted images in sagittal an...

BACKGROUND AND PURPOSE The oculomotor cistern (OMC) is a small CSF-filled dural cuff that invaginates into the cavernous sinus, surrounding the third cranial nerve (CNIII). It is used by neurosurgeons to mobilize CNIII during cavernous sinus surgery. In this article, we present the OMC imaging spectrum as delineated on 1.5T and 3T MR images and demonstrate its involvement in cavernous sinus pat...

The transsphenoidal transplanum, transtuberculum approach to the suprasellar cistern, also called the “extended” transsphenoidal approach, has been used during the past 10 years by experienced transsphenoidal surgeons to remove a limited number of well-circumscribed suprasellar lesions (7, 8, 10, 17, 20–23, 29). Initially, a sublabial approach was generally used and visualization was provided w...

We developed a new method for introducing drugs into the basal cistern of rabbits. With minimal surgical invasion, we used either the opening of the craniopharyngeal duct to access the chiasmatic cistern or the suture between the basisphenoid and basioccipital bones to access the interpeduncular cistern. With our method, 0.5 ml contrast medium injected into three rabbits was determined roentgen...

Udder and teat morphology measurements were taken at approximately 7.5 hr after the a.m. milking for 131 East Friesian (EF) crossbred ewes at an average of 71 d in lactation. Additionally, milking time was recorded for each ewe during two evening and morning milkings. Average daily milk production, milking time, percentage of milk fat, percentage of milk protein, and somatic cell count were 2 L...

background : collection and storage of roof rain water have been practiced for long time ago in iran and many other countries. water of cisterns is usually used as potable water. in golestan province many of rural torkman residents reservoir the most part of their potable water from roof rain in cisterns. in this province there are over 2600 cisterns. methods : to study the water quality, micro...

Dermoid cysts are rare, benign lesions of embryological origin that represent 0.1-0.7% of all intracranial tumors. They are mainly located in the supra tentorial space, especially in the parasellar region. Their location in the posterior fossa remains uncommon. Rupture of intracranial dermoid cysts is a rare phenomenon. We present a case of dermoid cyst, which had ruptured into ventricular syst...